Section TOC
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| TROUBLESHOOTING & REPAIR | |||
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| Observe all Safety Guidelines detailed throughout this manual |
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| PROBLEMS |
| POSSIBLE AREAS OF | RECOMMENDED |
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| (SYMPTOMS) |
| MISADJUSTMENT(S) | COURSE OF ACTION |
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OUTPUT PROBLEMS
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Input contactor pulls in when start button is pressed but immediately drops out when start button is released.
1.Make sure input voltages match machine rating and reconnect panel.
2.Remove all external wires attached to terminal strip (2, 4, 31, 32, 73, 74, 75, 76, 77). If contactor (1CR) functions cor- rectly, there may be a ground or negative intrusion on the remote control leads (73, 74, 75, 76, or 77). There may also be a short at the welder output terminals.
3.If the problem persists after performing steps #1 and #2, the problem is in the DC- 1000.
1.The 1CR interlock may be faulty. Replace if necessary.
2.The Start/Stop button may be faulty. Check or replace.
3.Check internal remote control circuit (leads 73, 74, 75, 76 and 77) and switch SW3 for grounds or shorts.
4.The control board may be faulty - Replace.
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CAUTION
If for any reason you do not understand the test procedures or are unable to perform the tests/repairs safely, contact the Lincoln Electric Service Department for technical troubleshooting assistance before you proceed. Call
